EP1552913A4 - Method for producing ceramic formed article - Google Patents

Method for producing ceramic formed article

Info

Publication number
EP1552913A4
EP1552913A4 EP03756613A EP03756613A EP1552913A4 EP 1552913 A4 EP1552913 A4 EP 1552913A4 EP 03756613 A EP03756613 A EP 03756613A EP 03756613 A EP03756613 A EP 03756613A EP 1552913 A4 EP1552913 A4 EP 1552913A4
Authority
EP
European Patent Office
Prior art keywords
article
formed article
ceramic formed
mold
solvent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03756613A
Other languages
German (de)
French (fr)
Japanese (ja)
Other versions
EP1552913A1 (en
Inventor
Sugio Miyazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Publication of EP1552913A1 publication Critical patent/EP1552913A1/en
Publication of EP1552913A4 publication Critical patent/EP1552913A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • B28B13/06—Removing the shaped articles from moulds
    • B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/624—Sol-gel processing
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C04B35/6264—Mixing media, e.g. organic solvents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6023—Gel casting
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658—Atmosphere during thermal treatment
    • C04B2235/6582—Hydrogen containing atmosphere
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/94—Products characterised by their shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

A method for producing a ceramic formed article which comprises forming a ceramic formed article by the use of the gel cast method, heating the resulting formed article to take out a solvent contained in the ceramic formed article to the exterior of the article, and then releasing the article from a mold. The solvent taken out from the article forms a solvent film between the outer surface of the article and the inner surface of the mold and the solvent film aids the release of the article from the mold. Thus, the above method can be used for preventing such a ceramic formed article from being damaged in a releasing operation.
EP03756613A 2002-10-16 2003-10-15 Method for producing ceramic formed article Withdrawn EP1552913A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002302013 2002-10-16
JP2002302013 2002-10-16
PCT/JP2003/013163 WO2004035281A1 (en) 2002-10-16 2003-10-15 Method for producing ceramic formed article

Publications (2)

Publication Number Publication Date
EP1552913A1 EP1552913A1 (en) 2005-07-13
EP1552913A4 true EP1552913A4 (en) 2008-05-07

Family

ID=32105038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03756613A Withdrawn EP1552913A4 (en) 2002-10-16 2003-10-15 Method for producing ceramic formed article

Country Status (4)

Country Link
EP (1) EP1552913A4 (en)
JP (1) JP4614767B2 (en)
CN (1) CN1705545B (en)
WO (1) WO2004035281A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7682547B2 (en) * 2004-10-26 2010-03-23 General Electric Company Integrally formed molded parts and method for making the same
JP4915772B2 (en) * 2005-12-09 2012-04-11 日本碍子株式会社 Manufacturing method of ceramic sintered body
US7487819B2 (en) 2006-12-11 2009-02-10 General Electric Company Disposable thin wall core die, methods of manufacture thereof and articles manufactured therefrom
US8178192B2 (en) 2008-03-06 2012-05-15 Ngk Insulators, Ltd. Ceramic green sheet, ceramic green sheet laminate, production method of ceramic green sheet, and production method of ceramic green sheet laminate
CN101602598B (en) * 2008-06-13 2013-10-09 黄沛恩 A kind of preparation method of ceramic lamp tube
JP5497669B2 (en) 2009-01-06 2014-05-21 日本碍子株式会社 Mold, and method for producing molded body using the mold
JP2010241129A (en) * 2009-03-19 2010-10-28 Ngk Insulators Ltd Method of producing powder compact
JP4929423B2 (en) 2010-07-22 2012-05-09 日本碍子株式会社 Molded body and method for producing molded body
EP2844839A1 (en) 2012-04-23 2015-03-11 General Electric Company Turbine airfoil with local wall thickness control
CN103414096A (en) * 2013-08-13 2013-11-27 安徽环巢光电科技有限公司 Method for manufacturing laser resonant cavity
WO2016066173A1 (en) 2014-10-30 2016-05-06 Danmarks Tekniske Universitet Dual-role plasticizer and dispersant for ceramic layers
DE102016104387B4 (en) * 2016-03-10 2020-11-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Extrusion process and extrusion device for the production of a ceramic tube closed with a bottom
SE541710C2 (en) * 2016-03-15 2019-12-03 Looft Ind Ab Portable igniter for ignition of a charcoal grill
JP6841881B2 (en) * 2019-09-02 2021-03-10 日本碍子株式会社 Manufacturing method of molded product
CN119039003A (en) * 2019-09-30 2024-11-29 康宁股份有限公司 Manufacture of flow reactor modules and modules produced
CN110653336A (en) * 2019-09-30 2020-01-07 西安皓森精铸有限公司 Wax mold splicing method for investment casting
CN113056682B (en) * 2019-10-24 2022-04-29 趣眼有限公司 Photonic system and method
GB2594228B (en) * 2019-11-20 2023-12-27 Jemmtec Ltd Mould for the manufacture of ceramic packing members
WO2022115324A1 (en) * 2020-11-30 2022-06-02 Corning Incorporated Process for forming ceramic bodies with internal passages or chambers using powder pressing around an internal mold
CN115504792B (en) * 2022-10-18 2023-07-28 福建华清电子材料科技有限公司 Preparation method of high-strength aluminum nitride ceramic
CN116175766A (en) * 2023-03-10 2023-05-30 浙江天禧新材料科技有限公司 Vegetable fiber cement pipe, pipe blank forming equipment and manufacturing method
DE102023135343A1 (en) 2023-12-15 2025-06-18 Volkswagen Aktiengesellschaft Process for producing a sorbent element for separating a gas and/or humidity from a fluid phase
CN118107042B (en) * 2024-04-14 2024-10-11 江苏汇浦新材科技有限公司 A method for preparing silicon nitride ceramic ball

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680049A (en) * 1986-08-15 1987-07-14 Gte Laboratories Incorporated Process for molding optical components of silicate glass to a near net shape optical precision
US6083452A (en) * 1999-01-20 2000-07-04 Raytheon Company Near net shape fabrication of ceramic radomes
WO2001038252A2 (en) * 1999-11-24 2001-05-31 Yazaki Corporation Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them
WO2002071442A1 (en) * 2000-11-06 2002-09-12 General Electric Company Ceramic discharge chamber for a discharge lamp and methods of making it
WO2002085590A1 (en) * 2001-04-17 2002-10-31 Ngk Insulators, Ltd. Method of manufacturing molded body, slurry for molding, core for molding, method of manufacturing core for molding, hollow ceramic molded body, and light emitting container

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JPS58145664A (en) * 1982-02-24 1983-08-30 日立化成工業株式会社 Manufacture of silicon carbide sintered body
JPH0813446B2 (en) * 1990-05-30 1996-02-14 株式会社日立製作所 Slip casting method
JPH06246728A (en) * 1993-02-23 1994-09-06 Mitsubishi Materials Corp Method for manufacturing hollow ceramics
JPH06315919A (en) * 1993-04-30 1994-11-15 Kikusui Kagaku Kogyo Kk Manufacture of ceramic
JPH07186133A (en) * 1993-12-27 1995-07-25 Sugiura Tokizou Instantaneous release method for concrete molding
US5861115A (en) * 1995-03-29 1999-01-19 Ngk Insulators, Ltd. Method for freeze molding
JP2968939B2 (en) * 1995-12-22 1999-11-02 日本碍子株式会社 Freezing molding method of ceramics using polyvinyl alcohol solution
JP3760085B2 (en) * 2000-07-06 2006-03-29 リンテック株式会社 Process film for manufacturing ceramic green sheets

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680049A (en) * 1986-08-15 1987-07-14 Gte Laboratories Incorporated Process for molding optical components of silicate glass to a near net shape optical precision
US6083452A (en) * 1999-01-20 2000-07-04 Raytheon Company Near net shape fabrication of ceramic radomes
WO2001038252A2 (en) * 1999-11-24 2001-05-31 Yazaki Corporation Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them
WO2002071442A1 (en) * 2000-11-06 2002-09-12 General Electric Company Ceramic discharge chamber for a discharge lamp and methods of making it
WO2002085590A1 (en) * 2001-04-17 2002-10-31 Ngk Insulators, Ltd. Method of manufacturing molded body, slurry for molding, core for molding, method of manufacturing core for molding, hollow ceramic molded body, and light emitting container
US20030190275A1 (en) * 2001-04-17 2003-10-09 Sugio Miyazawa Method of manufacturing molded body, slurry for molding, core for molding, method of manufacturing core for molding, hollow ceramic molded body, and light emitting container

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AMERICAN JOURNAL OF PHYSICS USA, vol. 36, no. 10, pages 920, ISSN: 0002-9505 *
DATABASE INSPEC [online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; October 1968 (1968-10-01), JENSEN H: "Freezing nitrogen: A modification", Database accession no. 4 *
See also references of WO2004035281A1 *

Also Published As

Publication number Publication date
JPWO2004035281A1 (en) 2006-02-09
WO2004035281A1 (en) 2004-04-29
CN1705545A (en) 2005-12-07
EP1552913A1 (en) 2005-07-13
CN1705545B (en) 2010-05-05
JP4614767B2 (en) 2011-01-19

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